Carbureter.



G. 3. PEMBRGKE.

GARBURETER, MIPLIGATION FILED AUG. 9, 191,1.

.05593529 Patented Mar. 1l, 1913.

l C M@ fl w /fl l I BEST Avait/ists .PATENT OFFICE.

CHARLES J. PMBROKE; O F. ROCHESTER, NEW YORK.

5. canistialn'rnn.

T 0 all whom limag concern.

Be it known that I, CHARLES J. Pminaoxn, of Rochester, in the 'county ,of Monroe and State of .New York, have'invented certain new. and useful Improvements in Carbureters; and I do hereby declarethe following to be 'a full, clear, and exact, description of the same, reference being had to the accompanying drawings, forming a partof the specification', and tothe reference-numerelsV marked thereon.

My rcsentinvention relates to carbureters or use in conjunctionwith explosive engines and has for its object to provide a device of this character capable of auto: mati'cally controlling the quantity of the fuel oil, orasolene, and the pressure of the air supp y admitted to the engineer motor under all the various conditions of operation. l

My invention has for'its further object to provide a carbureter with an additional fuel discharging device for supplying to the engine the proper quantity of vo at-ile oil or fuel to form the charge when such is required as a means of starting the engine" i under certain atmospheric conditions.

and Fig.- 5. is a view similar to Fig. 31

To these and other ends' the invention. consists in cert-am improvements and combi` nations of' arts all as-will be hereinafter more fully escribed, the novel-features being pointed out in the claims at the endof the specification.

In the drawin s: Figure 1 is a vertical sectional view sioving a carburetor conf` structed in accordance with'm invention;

Fig. 2 is a horizontal sectional view taken on tlie..line-2..-. 2 of Fi l; Fig. 3 is'a detail vers ective view of t e pressure controllin .nemier or' sleeve; Fig. 'Itis a det-ail vertice. sectional view on the line 4"-4" ofl 2;

ustrating a modified arrangement of the arts.

Similar reference numerals throug several figures indicate the same parts. In the illustrations adopted to-illustrate one embodiment of. my invention, I .have shown a carbureter comprising a casing com os'ed of upper and lower sections 1 an 2, within which are the centrally ari-an pld* e chamber 1n the upper section'is formed by.

vaporizing and carbureting chambers.

Specification-of rLetters Patent'. .s Patented appucauvn mea augus 951911.@` serial N.'4s,2`4s.

the

Mar.. 1'1, 1913.

ithe'ivall curving inwardly Aat the top, communicating with the passage 4, which, .it will be understood, is connected directly with the intake pipe or manifold of a' gas engine. The car ureting chamber is formed vby the annular wall 5, the upper end of which projects through the bottom of the chamber 1 Where it is provided with a plurality'of'apertures 6 which. are preferably made'V-shaped so as to form graduated A openings which increase in'arcal from their lower edges to the top of the wall. Above the latter and supported by the wall 3 is a partition 7 provided with a central aperture -8. In the.casing l the upper portion of the vaporizing chamber is surrounded by the chamber 9 to opposite sides of which lead intake and outlet pipes 10 and 1l vwhich are preferably connected inthe water circulat- -1ng system of the motor with which the carburet'eriste be used, fort-he purpose of maintaining the latter in a warmed or heated condition. Arranged in the passage 4 is' the usual butterfly throttle valt/e 412. The ,lower section 250i the casing also constitutes the float chamber 13 containing the volatile oil or fuel, the latter being fed thereto from a 'suitable source of su ply through the passageM controlled b te valve 15, which 1s opened and closed y the float 16, connected to the valve bythe pivoted crank arm 17, said valve and crank arm being disposed .in a laterallyprotruding portion 18 'of the float chamber.

The gasolene'or fuel oil is supplied to the carburetingy chamber and introduced into the 'eration of' the engine'fbeing determined by'- the'nedle valve21. In the present instance l,the nozzle 19"is disposed centrally within the 'carb'uieting chamber projecting therein the desired distance-.from a vlaterally extending ar'm or support. 22 having a passage 28 leading'tothe valve seat of the needle valve. This arm is connected to the casing 2 by a bolt 211 provided with a' passage 25,'which' 'opens jcommunication bet-Ween the fuel c ambe'rand the passage 23. Surrounding and integral with the lowerendof the nozzle at a suitable distance below' the lower edge BEST AVAILABLE COF" of the wall 5 is a'disk 26 on which rests the ressure regulating member 4or ileeve. The sitterV comprises t e ycollar 2i, :he body .29 provided'wit-h the vcentral air passageand the top plate 30.' 'The'jupper portion of theI c oll'ar projects intothe bottomo the fair, intake passage, its lowerfendnormally restin upon the d isk,26,xthe inner edge ofthe co lar and the-edge of the disk being preferabl beveled, as shown, and-the 'edge ofthe dis being rovided kwith notches or serrations 28. T ebody of the member or sleeve comprises the hollow frustuni-conoidiil portion forming ares rictedv neck .29the walls of which-are perf rated, as shown, -the inner surfaces thereof converging' from'` the top of the collar 27 to a point in proximity to the end of the ynozzle or inlet port 20 forming a restricted air, ass'ge' a in the mem ber. At vthe topo the latter. is a horizontally extending top late or disk 30, the whole member being o such a len .h that when in its normal position the dis isl supported in the position shown. in Fig. 1, 1n proximity to the lvver ends of the graduated apertures 6 at the top of the wall 5,.

In practice the total area. ofthe niches 28 in the disk 26 are made approximately equalto -ihe area of the passage a of the pressure regulating or ,controlling member, and the graduated openings 6 are iliade of such as sizethat when thesel are uncovered by the elevation of the pressure controlled membery toits highest point, as indicated in 'Fig'. 3, their combined areas, with the area of the passa e a, will a proximately equal' the area.- o the tlirotte controlled passage 4. The shape and configuration of the apertures in the sido wall of the restricted portion of the pressure controlled member may be formed as desired, but their combined areas should be at least' equal to, and preferably slightly greater than the combined areas of the graduated openings 6, and at the same time provide a surface which combined with the under surface of the disk 80, will a'ord a sufficient resistance to the inrusliiiig air to permit the member to be automatically operated by the strong inrush ofv air currents which exists in the inlet assage when the engine is operated at, hig speeds, and to maintain an nir cushion on w ich the sleeve rides at suoli'tinies.

-The sleeve works vertically, gravitating to its normal position at ,low engine speed and rises and falls with the fluctuations in the pressure of the inru'shin air occurring-upon changes of engine spe the 'use ofsprins or ot er mechanical devices for effecting t e movement ofthe pressure regulated member being eliminated.v

In ca 'ng out myinvention in the form illustrate as one embodiment thereof, I

form the centralopening a of the pressure regulating member on such lines that as the sleeve is carried upwardly or automatically adjusted-longitudinally of the intake passage, the cross sectional area of the opening `a 1n the-plane or zone of the dischar e port 20, increases to control the force of t ie suction exerted at this point as desired.

' 'The control of the gasolene or fuel is accomplished by tlife formation of the tapered inner surface of the passage a of the pressure controlling member, which, when iii its normal lowermost position causes the maximum suction force to be created at the gasolene outlet when the engine is being started. As .the speed of the latter increases, by the opening of the ,throttle valve 12, the ini-ushing air drawn through the vaporizing chainber or intake creates a pressure cousin the movable membcrlor'slecve to rise and in so doing thedisk 30 opens the rrraduated openings 6, more orless, to esta ilisli a balanced condition of the member or sleeve. Upon the upward movement of the latter it will be noticed that the area of tlie passage a, in

the plane of the vgasolcne outlet 20. is increased to regulate the suction at this point so that only that amount of gasolcnc is drawn into the engine which is suflicient to provide a proper carburcted mixture with the increased air supply then being drawn into the engine. It will he noticcd'liy this .arrangement of the parts that the pressure regulating' member simultaneously controls the air inlet ports und the feed of gasolcnc into the vaporizing chamber.

In Fig. 5 I have shown a modified :irrangement of thc graduated iiir passages. In this arrangement of the apparatus. the top portion of the tubular wall 5 is omitted, said wall terminating in the annular hoi-i zontal plate 50. The res-sure controlling m'ember top late or disk 300 is provided with a depen ing flange having the inverted V-shaped raduated apertures GO. Upon the vertica movemcntof the inonilieior sleeve the depending tluiigc rises and falls relatively to the plate 50 to coiitiol.tlio siziof the air openings formed h v the apri'- tures 60.'

The arrangement of the apri-turcs' or oponings in the intake passa c und tlul inovnlilo member or sleeve may ic varied from tho form shown, and these pui-ts muy he oiliorwise arranged without dep-.irting li'ooi tho spirit of my invention, hut in practico n di tinctadvantage is found tc exist in ori-aufging the o enings practically us illustrati-1.

since in a dition to rendering the vorhin-olor lll.'

il provided With a saat normally closed byl the valve head i2 operated by the spring 43 and provided with a suitable operating device such as a Wire il. by means of which the valve may be retracted. The chamber dil-is preferably proportioned to hold the lrequired amount of gasolene which, flowing into the chamber at the level of the liquid in the float chamber, ivill provide the proper amount of fuel required to enrich the charge suiiiciently for starting the engine under the ately drawn into the engine cylinders by the suction produced by the cranking operation, provided the throttle is in a nearly closed condition. rlfhe engine starting by this enriched charge will subsequently vdraw through the vaporizing cliambeithe required mixture to continue its operation.

I claim as my invention.:

i. A carbureter comprising a single cylindrical air intake passage, a liquid fuel inlet `nozzle discharging into said passage, and a movable member in the passage comprising a perforated tapered sleeve normally restricting but not completely closing the are-a of the passage, and which is automatically adjusted by the pressure of the air passing through said intake to increase theleast cross sectional area of the intake, said member also coperating with the fuel inlet, the tapered Wall of the sleeve and the perforationsA therein, serving upon movement of the member to vary t-he suction force created at the zone of the inlet by the air traveling through the intake passage.

2. A carbureter for forming explosive mixtures for evplosiveI engines comprising a casing, provided. with an intake passage for air having an outlet for the carbureted mixture adapted to be connected to an engine cylinder and a fuel supply inlet nozzle discharging into the intake passage, of a grav-ity operated sleeve having a perforated tapered body portion surroundingthe inlet and adapted to be moved longitudinally in the intakepa-ssage `bythe inrushing air to control the pressure of air in and permit ditlerent quantities of air to pass through said intake and also vary the suction pro duced at the zone of the fuel inlet.

3. ln a carbureter, the combination with a casing having a vaporizing'chamber provided fith a tubular air inlet passage and a wall projecting beyond the inlet into the chamber and provided and coperating with said openings, said sleeve having an airpassage leading therethrough a portion of which is provided with converging Walls, and a fuel discharge inlet opening into said air passage of the sleeve.

il. ln a carbureter, the combination With a casing having a chambered portion and a tubular portion opening therein having a ivall projecting into the chamber and provided With apertures, of a pressure regulating member movable longitudinally in the intake comprising a. disk cooperating with the apertures in the Wall to open and close them and a portion below the disk provided with a'conoidal shaped air passage, and a fuel inlet discharging into said air passage.

5. ln a carbureter, the combination with with graduated` openings, of a sleeve movable in the air inlet a casing having an air intake passage provided with inlet apertures, of a member movable longitudinallyv in the intake comprising a part coperating with the apertur'es to open and close them and a hollow frustoronoidal shaped portion provided .vith perforations in its side Walls and forniing a longitudinally extending air passage through the member, and a fuel inlet discharging into said air passage.

G. In a carbureter, the combination with a casing having an air intake passage, comprising a chambered portion and a ivall extending thereinte` having inlet passages. and a fuel supply inlet projecting into said intake, of a member movable longitudinally in the latter having a hollow tapered por- 4tion forming an air passage surrounding the fuel inlet and provided v vith perforations in its walls, and a top part normally lying below the inlet passages in said wall to cut off communication betiveen'said chamber and the intake passage excepting through the air passage in said member and adapted4 upon movement of the member to open communication between the chamber and intake through said inlet passages.

l 7. In carbureter, the combination with a casing having a chamber and a vertically arranged air inlet leading into the cham ber and comprising a free Wall surrounding the inlet and projecting into the Vchamber and provided With a plurality of apertures increasing in area toward the top of the Wll-,`of a gravity `operated member inthe between the intake ad-theehamberthrough: inlet having a top plate closing the intake said well apertures and a fuel inlet leading 1 lloelow said apfertures and a perfolrated tubuinto the airfinlet passage of the -1I'1ember.l Y ar portion Orming an a-lr in et passa e f 'p l5 normally connecting' the -outer end of tlgxe Jfintake with the chamber, said member be Witnessest 4 ng adapted to be automatically adjusted by WALTER f B BAYNE; jthe nrushing'. ai'r teopen communication G. l 

